Heat exchange device, battery pack and electric equipment

Abstract

The embodiment of the utility model provides a heat exchange device, a battery pack and electric equipment, and relates to the technical field of energy storage. The heat exchange device comprises at least two heat exchange runners, a confluence runner and a bridging structure, wherein the at least two heat exchange runners are mutually independent; the confluence runner and the at least one heat exchange runner are arranged at intervals; and the confluence flow channels and the heat exchange flow channels which are arranged at intervals are communicated through bridging structures. According to the embodiment of the invention, the balance of the heat exchange capacity of the heat exchange device can be ensured, and the waste of resources can be avoided.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of energy storage, and in particular, to a heat exchange device, a battery pack, and an electrical device. Background Art

[0002] A battery pack is a device that converts chemical energy into electrical energy and is widely used in fields such as new energy vehicles and energy storage power stations. A battery pack usually includes a housing and a plurality of batteries disposed inside the housing. When the plurality of batteries are working, a large amount of heat will be generated, and usually a heat exchange device is provided inside the housing to exchange heat for the batteries.

[0003] However, the heat generation amounts of different regions of each battery are different. When using the heat exchange device in the related art to exchange heat for the batteries, it is easy to cause uneven temperature distribution of the batteries, thereby affecting the performance and service life of the batteries. Summary of the Utility Model

[0004] In view of the above problems, the embodiments of the present application provide a heat exchange device, a battery pack, and an electrical device, which can improve the temperature uniformity of the batteries, thereby improving the performance and service life of the batteries.

[0005] To achieve the above object, the embodiments of the present application provide the following technical solutions:

[0006] The first aspect of the embodiments of the present application provides a heat exchange device, which includes:

[0007] At least two heat exchange channels, and at least two of the heat exchange channels are independent of each other;

[0008] A confluence channel, and the confluence channel and at least one of the heat exchange channels are arranged at intervals;

[0009] A bridging structure, and the bridging structure connects the confluence channel and the heat exchange channel arranged at intervals.

[0010] In a possible implementation manner, at least two of the heat exchange channels are arranged on the same layer.

[0011] In a possible implementation manner, the confluence channel is arranged on the same layer as the heat exchange channels, the confluence channel includes a first confluence channel and a second confluence channel, and the second confluence channel is located between the heat exchange channels and the first confluence channel;

[0012] Some of the at least two heat exchange channels are connected to the first confluence channel through the bridging structure;

[0013] The remaining heat exchange channels among the at least two heat exchange channels are connected to the second confluence channel.

[0014] In a possible implementation, the heat exchange device further includes a temperature averaging plate and a flow channel plate, and the temperature averaging plate and the flow channel plate are stacked;

[0015] The converging flow channel and the heat exchange flow channel are both arranged between the flow channel plate and the temperature uniform plate.

[0016] In a possible implementation, the heat exchange device further includes an auxiliary plate;

[0017] The auxiliary plate is stacked on a side of the temperature averaging plate away from the flow channel plate, and forms the bridge structure with the temperature averaging plate; wherein the bridge structure is a bridge flow channel;

[0018] The temperature equalizing plate is provided with a connecting hole; the first converging flow channel is connected with the heat exchange flow channel through the bridging flow channel and the connecting hole.

[0019] In a possible implementation, the confluence flow channel includes a first confluence flow channel and a second confluence flow channel, and the first confluence flow channel and the second confluence flow channel are arranged in different layers;

[0020] The first converging flow channel and the heat exchange flow channel are arranged in different layers, and the second converging flow channel and the heat exchange flow channel are arranged in the same layer; at least one of the first converging flow channel and the second converging flow channel is connected through the bridging structure.

[0021] In a possible implementation manner, an orthographic projection of the first converging flow channel on the surface where the second converging flow channel is located at least partially covers the second converging flow channel.

[0022] In a possible implementation, the heat exchange device includes a temperature averaging plate and a flow channel plate, and the temperature averaging plate and the flow channel plate are stacked;

[0023] The second converging channel and the heat exchange channel are both arranged between the channel plate and the temperature uniforming plate.

[0024] In a possible implementation, the bridging structure includes a bridging flow channel, and the heat exchange device further includes an auxiliary plate, which is stacked on a side of the temperature averaging plate away from the flow channel plate, and forms the first converging flow channel and the bridging structure with the temperature averaging plate, wherein the bridging structure is a bridging flow channel, and the bridging flow channel and the first converging flow channel are interconnected;

[0025] The temperature balancing plate is provided with a connecting hole;

[0026] The first converging flow channel is communicated with the heat exchange flow channel through the bridging flow channel and the connecting hole.

[0027] In a possible implementation, the converging channel and the heat exchange channel are arranged in different layers.

[0028] In a possible implementation, the positive projection of the confluence flow channel on the plane where the heat exchange flow channel is located partially coincides with the heat exchange flow channel, and both the confluence flow channel and the heat exchange flow channel have a projection coincidence area;

[0029] The bridging structure connects the projection coincidence areas of the confluence flow channel and the heat exchange flow channel.

[0030] In a possible implementation, the heat exchange device includes a confluence pipe, and the inner cavity of the confluence pipe constitutes the confluence flow channel;

[0031] The confluence pipe is connected to the heat exchange flow channel through the bridging structure.

[0032] In a possible implementation, the bridging structure includes a bridging pipe; the heat exchange device includes a heat spreader and a flow channel plate, and the heat exchange flow channel is arranged between the heat spreader and the flow channel plate;

[0033] A first communication hole is arranged on the confluence pipe, a second communication hole corresponding to the first communication hole is arranged on the heat spreader, and two ends of the bridging pipe are respectively connected to the first communication hole and the second communication hole.

[0034] In a possible implementation, the confluence pipe includes a first confluence pipe and a second confluence pipe, and the heat exchange flow channel includes a first heat exchange flow channel and a second heat exchange flow channel;

[0035] The first confluence pipe is connected to the first heat exchange flow channel through the bridging pipe, and the second confluence pipe is connected to the second heat exchange flow channel through the bridging pipe.

[0036] In a possible implementation, at least two of the heat exchange flow channels form a heat exchange flow channel group;

[0037] The number of the heat exchange flow channel groups is multiple, and the multiple heat exchange flow channel groups are arranged at intervals in a first direction;

[0038] In each heat exchange flow channel group, the confluence flow channel and the heat exchange flow channel arranged at intervals are both connected through the bridging structure.

[0039] In a possible implementation, the heat exchange flow channel group includes two first heat exchange flow channels and a second heat exchange flow channel located between the two first heat exchange flow channels, the two first heat exchange flow channels are connected, and the first heat exchange flow channel is independent of the second heat exchange flow channel;

[0040] The converging flow channel includes a first converging flow channel and a second converging flow channel. The first heat exchange flow channel is communicated with the first converging flow channel through the bridging structure, and / or the second heat exchange flow channel is communicated with the second converging flow channel through the bridging structure.

[0041] In a second aspect of the embodiments of the present application, a battery pack is provided, including a battery and the heat exchange device described in the first aspect;

[0042] The heat exchange device exchanges heat with the battery.

[0043] In a possible implementation manner, the battery has at least two heat generating regions with unequal heat generation amounts;

[0044] At least two of the heat exchange flow channels are arranged in one-to-one correspondence with the at least two heat generating regions, and each of the heat exchange flow channels is respectively used for exchanging heat with the corresponding heat generating region.

[0045] In a possible implementation manner, at least two of the heat generating regions include a second heat generating region and first heat generating regions respectively located on both sides of the second heat generating region, and the heat generation amount of the first heat generating region is greater than that of the second heat generating region;

[0046] At least two heat exchange flow channels include a second heat exchange flow channel and first heat exchange flow channels respectively located on both sides of the second heat exchange flow channel;

[0047] The first heat exchange flow channel exchanges heat with the first heat generating region, and the second heat exchange flow channel exchanges heat with the second heat generating region.

[0048] In a possible implementation manner, a plurality of the batteries are included, and the plurality of batteries are arranged at intervals along a first direction; each of the batteries exchanges heat with the corresponding heat exchange flow channel group.

[0049] In a third aspect of the embodiments of the present application, an electrical equipment is provided, including an electrical device and the battery pack described in the second aspect. The battery pack is electrically connected to the electrical device and is used to provide electrical energy for the electrical device.

[0050] In the heat exchange device, battery pack and electrical equipment provided by the embodiments of the present application, at least two heat exchange flow channels can be relatively independent. By adjusting the flow rates of different heat exchange flow channels, precise control of the temperatures and heat quantities of different heat exchange flow channels can be achieved, ensuring uniform temperature distribution inside the heat exchange device. Furthermore, heat exchange can be targeted at different regions of the battery, improving the temperature uniformity of different regions of the battery, and thus improving the performance and service life of the battery. In addition, it is not necessary to design the flow rate of the fluid according to the region with the largest heat exchange demand of the battery, which can avoid waste of resources and reduce the heat exchange cost of the heat exchange device.

[0051] The spaced busbar flow channels and the heat exchange flow channels are connected through a bridging structure, which can reasonably layout the positions of the busbar flow channels and the heat exchange flow channels, making the overall structure of the heat exchange device more compact, saving space, and facilitating the development of the heat exchange device towards miniaturization.

[0052] In addition to the technical problems solved by the embodiments of the present application described above, the technical features constituting the technical solutions, and the beneficial effects brought by these technical features of the technical solutions, the other technical problems that the heat exchange device, battery pack, and electrical equipment provided by the embodiments of the present application can solve, the other technical features included in the technical solutions, and the beneficial effects brought by these technical features will be further described in detail in the specific implementation manners. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0054] Figure 1 Schematic diagram of the heat exchange device provided by the embodiment of the present application Figure 1 ;

[0055] Figure 2 Partial structural schematic diagram of the heat exchange device provided by the embodiment of the present application Figure 1 ;

[0056] Figure 3 Partial structural schematic diagram of the heat exchange device provided by the embodiment of the present application Figure 2 ;

[0057] Figure 4 Partial structural schematic diagram of the heat exchange device provided by the embodiment of the present application Figure 3 ;

[0058] Figure 5 Partial structural schematic diagram of the heat exchange device provided by the embodiment of the present application Figure 4 ;

[0059] Figure 6 Schematic diagram of the heat exchange device provided by the embodiment of the present application Figure 2 ;

[0060] Figure 7 For Figure 6 Enlarged schematic diagram of area A in

[0061] Figure 8 Partial structural schematic diagram of the heat exchange device provided by the embodiment of the present application Figure 5 ;

[0062] Figure 9 is Figure 8 an enlarged schematic view of area B in

[0063] Figure 10 a partial structural schematic diagram of the heat exchange device provided by the embodiment of the present application Figure 6 ;

[0064] Figure 11 is Figure 10 an enlarged schematic view of area C in

[0065] Figure 12 a structural schematic diagram of the battery pack provided by the embodiment of the present application

[0066] Figure 13 the distribution of the batteries provided by the embodiment of the present application Figure 1 ;

[0067] Figure 14 the distribution of the batteries provided by the embodiment of the present application Figure 2 。

[0068] Description of reference numerals:

[0069] 100: heat exchange flow channel; 110: first heat exchange flow channel; 120: second heat exchange flow channel; 130: heat dissipation plate; 131: communication hole; 140: flow channel plate; 150: auxiliary plate;

[0070] 300: bus bar flow channel; 310: first bus bar flow channel; 311: first sub-bus bar flow channel; 312: third sub-bus bar flow channel; 320: second bus bar flow channel; 321: second sub-bus bar flow channel; 322: fourth sub-bus bar flow channel; 330: first liquid return bus bar; 340: second liquid return bus bar;

[0071] 400: bridging structure;

[0072] 500: first joint;

[0073] 600: second joint;

[0074] 700: bus bar pipeline; 710: first bus bar pipeline; 720: second bus bar pipeline;

[0075] 800: heat exchange flow channel group;

[0076] 900: battery; 910: first heat generation area; 920: second heat generation area. Detailed implementation manners

[0077] In the related art, different parts of the battery cells often generate different amounts of heat. For example, along the width direction of the battery cell, the heat generated at both ends of the electrodes of the battery cell is greater than that in the middle section of the battery cell. In the related art, the heat exchange device usually includes a single liquid inlet joint and a liquid outlet joint. The fluid flowing in from the liquid inlet joint has to flow through both ends of the battery cell and also through the middle of the battery cell. If it is designed according to the refrigerant flow rate required to cool both ends of the battery cell, it is necessary to increase the refrigerant flow rate at the liquid inlet joint. However, the heat generated in the middle section of the battery cell is relatively small and does not require a large refrigerant flow rate, resulting in a waste of resources. If it is designed according to the refrigerant flow rate required to cool the middle section of the battery cell, the refrigerant flow rate required to cool both ends of the battery cell, it will cause overheating at both ends of the battery cell, reducing the stability and service life of the battery cell.

[0078] In view of the above technical problems, the embodiments of the present application provide a heat exchange device, a battery pack, and an electrical device. At least two heat exchange channels can be relatively independent. By adjusting the flow rates of different heat exchange channels, precise control of the temperature and heat of different heat exchange channels can be achieved, ensuring uniform temperature distribution of the heat exchange device. Furthermore, targeted heat exchange can be performed on different regions of the battery, improving the temperature uniformity of different regions of the battery, and thus improving the performance and service life of the battery. In addition, it is not necessary to design the fluid flow rate according to the region with the largest heat exchange demand of the battery, which can avoid waste of resources and reduce the heat exchange cost of the heat exchange device.

[0079] In addition, the converging flow channels and the heat exchange channels arranged at intervals are connected through a bridging structure, which can reasonably layout the positions of the converging flow channels and the heat exchange channels, making the overall structure of the heat exchange device more compact, saving space, and facilitating the development of the heat exchange device towards miniaturization.

[0080] In order to make the above objects, features, and advantages of the embodiments of the present application more obvious and understandable, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0081] The embodiments of the present application provide a heat exchange device, which can be used for heat exchange with a battery pack. It should be understood that the heat exchange mentioned in this embodiment can be understood as that the heat exchange device can cool down the battery pack or heat the battery pack. Specifically, the type of fluid flowing in the heat exchange device can be freely selected according to the environment where the battery pack is located. For example, when the heat exchange device is used to cool down the battery pack, the fluid can include refrigerant, CO2, ethylene glycol, or water.

[0082] Please refer to the attachedFigure 1 , the heat exchange device includes at least two heat exchange channels 100, and the at least two heat exchange channels 100 are independent of each other; for example, the number of heat exchange channels 100 can be two, three, four or even more. It should be noted that the at least two heat exchange channels 100 can be arranged on the same layer or on different layers. Exemplarily, arranging the at least two heat exchange channels 100 on the same layer can simplify the manufacturing process of the heat exchange channels 100.

[0083] In view of the relative independence of the at least two heat exchange channels 100, by adjusting the flow rates of different heat exchange channels 100, precise control of the temperatures and heat quantities of different heat exchange channels can be achieved, ensuring uniform temperature distribution in the heat exchange device. Furthermore, targeted heat exchange can be carried out on different regions of the battery, improving the temperature uniformity of different regions of the battery, and thus improving the performance and service life of the battery. In addition, there is no need to design the flow rate of the heat exchange channels 100 according to the region with the largest heat exchange demand of the battery, which can avoid waste of resources and thus reduce the heat exchange cost of the heat exchange device.

[0084] It should be understood that for the convenience of controlling the fluid flow rates in the at least two heat exchange channels 100, the at least two heat exchange channels 100 can be respectively connected to the thermal management system through heat exchange joints, and the opening degrees of the respective heat exchange joints are adjusted by the thermal management system, thereby achieving independent control of the fluid flow rates in the at least two heat exchange channels 100.

[0085] In this embodiment, the at least two heat exchange channels 100 can include two, three, four or even more. Exemplarily, the at least two heat exchange channels 100 can include a first heat exchange channel 110 and a second heat exchange channel 120, and the first heat exchange channel 110 is arranged on at least one side of the second heat exchange channel 120. For example, the number of the first heat exchange channels 110 is one, and the first heat exchange channel 110 is located on one side of the second heat exchange channel 120. Another example is that the number of the first heat exchange channels 110 can also be two, and the two first heat exchange channels 110 are respectively located on both sides of the second heat exchange channel 120.

[0086] One of the heat exchange channels 100 can cool the high heat generation region of the battery, and the other heat exchange channel 100 can cool the low heat generation region of the battery. The low heat generation part of the heat exchange channel 100 for cooling the low heat generation region can be not turned on for cooling or delayed to be turned on during use, achieving effects such as reducing the temperature difference of the battery and saving power consumption.

[0087] The heat exchange device provided by the embodiment of the present application further includes a confluence flow channel 300 and a bridging structure 400. The confluence flow channel 300 and at least one heat exchange flow channel 100 are arranged at intervals. Among them, the confluence flow channel 300 and at least one heat exchange flow channel 100 being arranged at intervals can be understood as the confluence flow channel 300 and at least one heat exchange flow channel 100 being arranged at intervals in the horizontal direction, or it can be understood as the confluence flow channel 300 and at least one heat exchange flow channel 100 being arranged at intervals in the vertical direction.

[0088] Since there are two independent heat exchange flow channels 100 in the heat exchange device, when the above two heat exchange flow channels 100 exchange heat medium, they require independent liquid inlet flow channels and liquid outlet flow channels, that is, the confluence flow channel needs to be independently arranged. Furthermore, the spaced confluence flow channel 300 and heat exchange flow channel 100 are connected through the bridging structure 400. On the one hand, the arrangement positions of the confluence flow channel 300 and the heat exchange flow channel 100 can be reasonably arranged, making the overall structure of the heat exchange device more compact, saving space, and facilitating the development of the heat exchange device towards miniaturization. On the other hand, it can also ensure the normal flow of fluid between the spaced confluence flow channel 300 and heat exchange flow channel 100.

[0089] In a possible implementation manner, the confluence flow channel 300 and the heat exchange flow channel 100 are arranged on the same layer, that is, the confluence flow channel 300 and the heat exchange flow channel 100 are in the same plane.

[0090] Please refer to the appendix Figure 1 , where the confluence flow channel 300 includes a first confluence flow channel 310 and a second confluence flow channel 320. The second confluence flow channel 320 is located between the heat exchange flow channel 100 and the first confluence flow channel 310, or rather, the first confluence flow channel 310 is located on the side of the second confluence flow channel 320 away from the heat exchange flow channel 100.

[0091] Some of the at least two heat exchange flow channels 100 are connected to the first confluence flow channel 310 through the bridging structure 400; the remaining heat exchange flow channels 100 among the at least two heat exchange flow channels 100 are connected to the second confluence flow channel 320. It should be noted that in this example, the partial quantity and the remaining quantity can be understood as follows: when the number of the at least two heat exchange flow channels 100 is two, the partial quantity can refer to one of them, and the remaining quantity can refer to the other one. When the number of the at least heat exchange flow channels 100 is three, the partial quantity can refer to one of them, and the remaining quantity can refer to the other two; or, the partial quantity can refer to two of them, and the remaining quantity can refer to the other one.

[0092] For the convenience of arranging the connection modes of the first confluence flow channel 310 and the second confluence flow channel 320 with at least two heat exchange flow channels 100, the following embodiments are all described by taking at least two heat exchange flow channels 100 including a first heat exchange flow channel 110 and a second heat exchange flow channel 120 as an example.

[0093] Since the first heat exchange flow channel 110 and the second heat exchange flow channel 120 are independent of each other, the first confluence flow channel 310 and the second heat exchange flow channel 120 are also independent of each other. Furthermore, the first confluence flow channel 310 can be connected to the first heat exchange flow channel 110 through the bridging structure 400, and the second confluence flow channel 320 is directly connected to the second heat exchange flow channel 120. In this way, the flow path of the fluid in the heat exchange device can be optimized, which helps to evenly distribute the fluid, thereby improving the heat exchange efficiency of the heat exchange device. In addition, in this embodiment, the first confluence flow channel 310 and the first heat exchange flow channel 110 are connected through the bridging structure 400. Without changing the installation position of the second confluence flow channel 320, the first confluence flow channel 310 can be connected to the first heat exchange flow channel 110, ensuring that the fluid can flow into the first heat exchange flow channel 110, and then enabling the first heat exchange flow channel 110 to have the heat exchange capacity. Moreover, the connection between the first confluence flow channel 310 and the first heat exchange flow channel 110 through the bridging structure 400 also makes the structure of the heat exchange device more compact, which helps to save space and is suitable for application scenarios where efficient heat exchange is required but space is limited.

[0094] In addition, in other possible implementation manners, the second confluence flow channel 320 can be connected to the second heat exchange flow channel 120 through the bridging structure 400, and the first confluence flow channel 310 is directly connected to the first heat exchange flow channel 110. Or the first confluence flow channel 310 can be connected to the first heat exchange flow channel 110 through the bridging structure 400 and the second confluence flow channel 320 can be connected to the second heat exchange flow channel 120 through the bridging structure 400.

[0095] To implement the dual-control design concept of the heat exchange device, the heat exchange device provided in this embodiment further includes a first joint 500 and a second joint 600. The first joint 500 is connected to the first heat exchange flow channel 110 through the first confluence flow channel 310, and the second joint 600 is connected to the second heat exchange flow channel 120 through the second confluence flow channel 320. Both the first joint 500 and the second joint 600 can be connected to the thermal management system. By independently controlling the first joint 500 and the second joint 600 through the thermal management system, the flow rates of the first heat exchange flow channel 110 and the second heat exchange flow channel 120 can be accurately adjusted to meet the requirements under different working conditions.

[0096] The first confluence flow channel 310 includes a first sub-confluence flow channel 311, and the second confluence flow channel 320 includes a second sub-confluence flow channel 321; the first sub-confluence flow channel 311 and the second sub-confluence flow channel 321 are located on the first side of the heat exchange flow channel 100; the first sub-confluence flow channel 311 is connected to the first heat exchange flow channel 110 through the bridging structure 400.

[0097] The first confluence flow channel 310 includes a third sub-confluence flow channel 312, and the second confluence flow channel 320 includes a fourth sub-confluence flow channel 322; the third sub-confluence flow channel 312 and the fourth sub-confluence flow channel 322 are located on the second side of the heat exchange flow channel 100; the third sub-confluence flow channel 312 communicates with the first heat exchange flow channel 110 through a bridging structure 400. It should be understood that in this embodiment, the first side and the second side can be arranged along the first direction, and one of the first side and the second side is the liquid inlet end, and the other of the first side and the second side is the liquid outlet end.

[0098] In this embodiment, through the design of multiple sub-confluence flow channels and bridging flow channels, it helps to transfer heat more effectively and improve the performance of the battery pack. In addition, the first heat exchange flow channel 110 and the second heat exchange flow channel 120 have relatively independent connectors, that is, the flow rate of the fluid in the first heat exchange flow channel 110 can be controlled by relying on the first connector 500 and in cooperation with the thermal management system of the battery pack, and the flow rate of the fluid in the second heat exchange flow channel 120 can be controlled by relying on the second connector 600 and in cooperation with the thermal management system of the battery pack to form a double-in and double-out intelligent heat exchange device. In this way, more flexible adjustment means can be available, and then the heat exchange device has a faster response speed, can better and more accurately control the temperature difference of the battery, so that each cell in the battery can enjoy equal treatment, and at the same time has the smallest space requirement on the plane. In addition, the double-in and double-out intelligent heat exchange device not only does not need to perform secondary design of thermal management for a certain small part, but also can reduce the frictional head loss and has excellent energy-saving properties.

[0099] It should be noted that in order to facilitate the fluid to form a complete circulation loop in the confluence flow channel 300, the number of the first connectors 500 and the number of the second connectors 600 can both be two. Please continue to refer to the appendix Figure 1 , the end of the first sub-confluence flow channel 311 facing away from the first heat exchange flow channel 110 communicates with one of the first connectors 500, and the end of the third sub-confluence flow channel 312 facing away from the first heat exchange flow channel 110 communicates with the other first connector 500. Among them, the first sub-confluence flow channel 311 can be one of the liquid inlet confluence flow channel and the liquid outlet confluence flow channel of the first heat exchange flow channel 110; the third sub-confluence flow channel 312 is the other of the liquid inlet confluence flow channel and the liquid outlet confluence flow channel of the first heat exchange flow channel 110. For example, the first sub-confluence flow channel 311 is used as the liquid inlet confluence flow channel, and the third sub-confluence flow channel 312 is used as the liquid outlet confluence flow channel of the first heat exchange flow channel 110.

[0100] The end of the second sub-converging flow channel 321 facing away from the second heat exchange flow channel 120 communicates with one of the second connectors 600, so that the second sub-converging flow channel 321 serves as one of the liquid inlet converging flow channel and the liquid outlet converging flow channel of the second heat exchange flow channel 120; the end of the fourth sub-converging flow channel 322 facing away from the second heat exchange flow channel 120 communicates with the other second connector 600, so that the fourth sub-converging flow channel 322 serves as one of the liquid inlet converging flow channel and the liquid outlet converging flow channel of the second heat exchange flow channel 120. For example, the second sub-converging flow channel 321 is the liquid outlet converging flow channel, and the fourth sub-converging flow channel 322 is the liquid inlet converging flow channel.

[0101] In this embodiment, the liquid inlet converging flow channel of the first heat exchange flow channel 110 and the liquid outlet converging flow channel of the second heat exchange flow channel 120 are located on the same side of the heat exchange flow channel 100, and the liquid outlet converging flow channel of the first heat exchange flow channel 110 and the liquid inlet converging flow channel of the second heat exchange flow channel 120 are located on the same side of the heat exchange flow channel 100. Such an arrangement can reduce the cross-contamination between fluids and help improve the cleanliness of the battery pack and the purity of the fluid.

[0102] It should be understood that the four connectors can be arranged at both ends of the heat exchange flow channel 100 in the first direction, or there can be other layout methods. Exemplarily, among the two first connectors 500, one of the first connectors 500 is arranged at the end of the heat exchange flow channel 100 in the first direction and serves as the liquid inlet connector; the other first connector 500 is arranged in the middle of the heat exchange flow channel 100 in the first direction and serves as the liquid outlet connector. At the same time, among the two second connectors 600, one of the second connectors 600 is arranged at the end of the heat exchange flow channel 100 in the first direction and serves as the liquid inlet connector; the other second connector 600 is arranged in the middle of the heat exchange flow channel 100 in the first direction and serves as the liquid outlet connector.

[0103] At this time, the heat exchange device may further include a first liquid return converging flow channel 330 and a second liquid return converging flow channel 340; the second sub-converging flow channel 321 communicates with the first connector 500 serving as the liquid outlet connector through the third sub-converging flow channel 312; the second sub-converging flow channel 321 communicates with the second connector 600 serving as the liquid outlet connector through the second liquid return converging flow channel 340.

[0104] The first liquid return manifold 330 and the second liquid return manifold 340 are arranged on a different layer from the heat exchange manifold 100. In the thickness direction of the support member, the first liquid return manifold 330 and the second liquid return manifold 340 are arranged on the same side of the heat exchange manifold 100, or are respectively arranged on both sides of the heat exchange manifold 100. Such an arrangement can prevent the first liquid return manifold 330, the second liquid return manifold 340 and the heat exchange manifold 100 from being on the same layer. On the one hand, it reduces the manufacturing difficulty of the first liquid return manifold 330, the second liquid return manifold 340 and the heat exchange manifold 100. On the other hand, it avoids the fluid crosstalk between the first liquid return manifold 330, the second liquid return manifold 340 and the fluid in the heat exchange manifold 100. Thus, on the premise of ensuring the normal operation of the heat exchange component, the heat exchange efficiency of the heat exchange component is also improved.

[0105] It should be understood that the first liquid return manifold 330 and the second liquid return manifold 340 can be separate pipes or can have other structures. Exemplarily, the support member of the battery pack further includes an intermediate beam (not shown in the figure). The intermediate beam extends in the second direction and is located in the middle of the support member.

[0106] Both the first liquid return manifold 330 and the second liquid return manifold 340 are formed in the intermediate beam. For example, two grooves are provided on the intermediate beam and extend in the second direction; the two grooves respectively constitute the first liquid return manifold 330 and the second liquid return manifold 340. Such an arrangement can simplify the first liquid return manifold 330 and the second liquid return manifold 340, and thus simplify the manufacturing difficulty of the heat exchange component and reduce the production cost of the heat exchange component.

[0107] In addition, in other embodiments, the grooves accommodate the first liquid return manifold 330 and the second liquid return manifold 340. That is, the first liquid return manifold 330 and the second liquid return manifold 340 can also be composed of additional components, and the grooves only provide a space for the additional components. For example, a liquid return member is provided on the heat exchange component, and the liquid return member is arranged on the side of the temperature equalizing plate away from the flow channel plate, so that the first liquid return manifold 330 and the second liquid return manifold 340 are formed between the liquid return member and the temperature equalizing plate. At this time, the groove at least accommodates part of the liquid return member. In this way, on the one hand, the height of the battery pack can be reduced. On the other hand, more internal space can be released for the arrangement of other components, improving the space utilization rate.

[0108] In addition, it is usually necessary to control the superheat at the outlet of the heat exchange device to ensure the normal operation of the compressor. The flow channels here usually overheat. Therefore, in this embodiment, it is necessary to consider placing the first liquid return manifold channel 330 and the second liquid return manifold channel 340 at positions where the battery 900 is not provided. For example, the first liquid return manifold channel 330 and the second liquid return manifold channel 340 are arranged on the middle beam. With this arrangement, on the one hand, even when the temperatures of the first liquid return manifold channel 330 and the second liquid return manifold channel 340 are too high, it will not affect the heat exchange of the battery, avoiding overheating of the battery and improving the temperature uniformity of the battery. On the other hand, based on the relatively large size of the middle beam, in this embodiment, setting the first liquid return manifold channel 330 and the second liquid return manifold channel 340 on the middle beam can improve the stability of the battery pack.

[0109] It should be noted that the first liquid return manifold channel 330 and the second liquid return manifold channel 340 can be separate pipes, and the two grooves can also accommodate the pipes respectively, providing installation space for the pipes, reducing the height of the battery pack, and thus improving the energy density of the battery pack.

[0110] In a possible implementation, please refer to the attached Figure 2 , the heat exchange device further includes a heat spreader 130 and a flow channel plate 140, and the heat spreader 130 and the flow channel plate 140 are stacked. Among them, the manifold channel 300 and the heat exchange channel 100 are both arranged between the flow channel plate 140 and the heat spreader 130. During the manufacturing process, the manifold channel 300 and the heat exchange channel 100 can be formed on the flow channel plate 140 by stamping process; then, the heat spreader 130 is covered on the flow channel plate 140, and the heat spreader 130 is fixed to the flow channel plate 140 by welding or bolts. In this embodiment, the manifold channel 300 and the heat exchange channel 100 are formed on the flow channel plate 140 by stamping process, which can simplify the manufacturing process, improve production efficiency, and reduce manufacturing costs.

[0111] Please continue to refer to the attached Figure 2 and the attached Figure 3 , the heat exchange device further includes an auxiliary plate 150; the auxiliary plate 150 is stacked on the side of the heat spreader 130 facing away from the flow channel plate 140 and forms a bridging structure 400 with the heat spreader 130. Among them, the bridging structure 400 is a bridging flow channel.

[0112] The heat pipe 130 is provided with communication holes 131 which connect the first confluence flow channel 310 and the heat exchange flow channel 100. For example, the communication holes 131 connect the first confluence flow channel 310 and the first heat exchange flow channel 110. Exemplarily, in this embodiment, a first communication hole (not shown in the figure) and a second communication hole (not shown in the figure) are provided on the heat pipe 130. One end of the bridging flow channel is connected to the first confluence flow channel 310 through the first communication hole, and the other end of the bridging flow channel is connected to the first heat exchange flow channel 110 through the second communication hole, so as to realize the connection between the first confluence flow channel 310 and the first heat exchange flow channel 110.

[0113] In this embodiment, the auxiliary plate 150 is arranged on the side of the heat pipe 130 away from the flow channel plate 140, and the bridging channel is formed between the auxiliary plate 150 and the heat pipe 130. On the one hand, the flow path of the fluid can be optimized, the flow resistance is reduced, and the heat exchange efficiency is improved. On the other hand, the auxiliary plate 150 can also increase the stability and strength of the heat exchange device.

[0114] In this example, the height of the bridging flow channel can be equal to the height of the confluence flow channel 300. For example, the height of the bridging flow channel and the confluence flow channel 300 can be 2.8 mm. It should be noted that both the first confluence flow channel 310 and the second confluence flow channel 320 are arranged on the same layer as the heat exchange flow channel 100, and there can also be other arrangement methods.

[0115] Exemplarily, please refer to the appendix Figure 4 The confluence flow channel 300 includes a first confluence flow channel 310 and a second confluence flow channel 320, and the first confluence flow channel 310 and the second confluence flow channel 320 are arranged on different layers.

[0116] The first confluence flow channel 310 is arranged on a different layer from the heat exchange flow channel 100, and the second confluence flow channel 320 and the heat exchange flow channel 100 are arranged on the same layer. At least one of the first confluence flow channel 310 and the second confluence flow channel 320 is connected through a bridging structure 400.

[0117] In this embodiment, the first confluence flow channel 310 is arranged on a different layer from the heat exchange flow channel 100, and the second confluence flow channel 320 is arranged on the same layer as the heat exchange flow channel 100. By setting like this, the occupied area of the confluence flow channel 300 in the horizontal direction of the heat exchange device can be reduced, which is more beneficial to increasing the occupied area of the heat exchange flow channel 100. Furthermore, it is convenient to divide the heat exchange flow channel 100 into multiple sub-heat exchange channels, which fully ensures that the heat exchange device can perform zonal control on the battery and improves the temperature uniformity of the battery.

[0118] Among them, the first confluence flow channel 310 and the second confluence flow channel 320 can be arranged in alignment or offset in the vertical direction. In this embodiment, the vertical direction can be attached Figure 4In the Z direction. Exemplarily, the orthographic projection of the first confluence flow channel 310 on the plane where the second confluence flow channel 320 is located covers at least a part of the second confluence flow channel 320. For example, the orthographic projection of the first confluence flow channel 310 on the plane where the second confluence flow channel 320 is located covers a part of the second confluence flow channel 320. For another example, the orthographic projection of the first confluence flow channel 310 on the plane where the second confluence flow channel 320 is located covers the entire second confluence flow channel 320. With such a setting, the structure of the heat exchange device can be made more compact, saving space and facilitating the development of the heat exchange device towards miniaturization; it can also optimize the layout of the confluence flow channel 300 and the heat exchange flow channel 100 of the heat exchange device, improving the space utilization rate.

[0119] As a possible implementation manner of the heat exchange device, please refer to the attached Figure 5 , the heat exchange device includes a heat spreader 130 and a flow channel plate 140, and the heat spreader 130 and the flow channel plate 140 are stacked. The second confluence flow channel 320 and the heat exchange flow channel 100 are both arranged between the flow channel plate 140 and the heat spreader 130.

[0120] The bridging structure 400 includes a bridging flow channel. The heat exchange device further includes an auxiliary plate 150. The auxiliary plate 150 is stacked on the side of the heat spreader 130 facing away from the flow channel plate 140 and forms the first confluence flow channel 310 and the bridging structure 400 with the heat spreader 130. Among them, the bridging structure 400 is a bridging flow channel, and the bridging flow channel and the first confluence flow channel 310 are interconnected. Taking the orientation shown in the attached Figure 5 as an example, the first confluence flow channel 310 is located in the area to the left of the dashed line, and the bridging flow channel is located in the area to the right of the dashed line.

[0121] A communication hole 131 is provided on the heat spreader 130. The first confluence flow channel 310 is communicated with the heat exchange flow channel 100 through the communication hole 131 and the bridging flow channel. In this embodiment, the first confluence flow channel 310 and the bridging flow channel are arranged on the same layer and are interconnected. In this way, it can be directly communicated with the heat exchange flow channel 100 through a communication hole 131, shortening the communication path between the first confluence flow channel 310 and the heat exchange flow channel 100, reducing the resistance and pressure drop of fluid flow, thereby reducing the energy consumption of the heat exchange device and improving the heat exchange effect of the heat exchange device.

[0122] Please continue to refer to the attached Figure 2 , in this embodiment, the auxiliary plate 150 can be arranged between the heat exchange device and the support member of the battery pack. For example, the auxiliary plate 150 can be supported by the side beam of the support member, which can improve the stability of the heat exchange device.

[0123] A relief cavity (not shown in the figure) is provided on the side beam. The relief cavity is used to accommodate the auxiliary plate 150, thereby protecting the auxiliary plate 150 from external physical damage and environmental influences, helping to extend the service life of the auxiliary plate 150 and improving the reliability of the battery pack.

[0124] In this embodiment, there is a gap between the auxiliary plate 150 and the inner wall of the avoidance cavity. For example, along the thickness direction of the support member, the distance between the surface of the auxiliary plate 150 facing away from the heat dissipation plate 130 and the heat dissipation plate 130 is 4 mm, then the distance between the bottom wall of the avoidance cavity and the heat dissipation plate 130 is greater than 4 mm. With such a setting, on the one hand, it allows the auxiliary plate 150 to have a certain degree of freedom during the thermal expansion and contraction process, thereby reducing the influence of thermal stress on the auxiliary plate 150 and the avoidance cavity, contributing to extending the service life of the battery pack and improving the reliability of the battery pack; on the other hand, it can play a role in shock absorption and vibration absorption, reducing the mechanical stress on the auxiliary plate 150 during operation, which helps to improve the stability and durability of the battery pack.

[0125] In addition, in other embodiments, the auxiliary plate 150 can also be arranged between the battery 200 and the side beam, that is, there is a gap between the battery 200 and the side beam, and this gap can be used to accommodate the auxiliary plate 150.

[0126] In a possible implementation manner, please refer to Appendix Figure 6 to Appendix Figure 11 , the busbar flow channels 300 and the heat exchange flow channels 100 are arranged on different layers. In other words, all the busbar flow channels 300 and the heat exchange flow channels 100 are arranged on different layers. In this way, the occupied area of the heat exchange flow channels 100 can be greatly increased, and the battery is not cooled, which is convenient for dividing at least two heat exchange flow channels 100 to form an independent dual-control structure, thereby ensuring that the heat exchange device can perform zone control on the battery and improving the temperature uniformity of the battery.

[0127] In a possible implementation manner, the orthographic projection of the busbar flow channel 300 on the plane where the heat exchange flow channel 100 is located partially overlaps with the heat exchange flow channel 100, and both the busbar flow channel 300 and the heat exchange flow channel 100 have a projection overlapping area; the bridging structure 400 connects the projection overlapping areas of the busbar flow channel 300 and the heat exchange flow channel 100. By setting the two projection overlapping areas opposite to each other, the setting position of the bridging structure 400 can be optimized, facilitating the bridging structure 400 to directly connect the busbar flow channel 300 and the heat exchange flow channel 100, optimizing the heat transfer path, reducing heat loss, and improving the heat exchange efficiency of the heat exchange device.

[0128] To facilitate the arrangement of the busbar flow channels 300 and the heat exchange flow channels 100 on different layers, the heat exchange device includes a busbar pipe 700, and the inner cavity of the busbar pipe 700 constitutes the busbar flow channels 300; the busbar pipe 700 is connected to the heat exchange flow channels 100 through the bridging structure 400. Among them, the material of the busbar pipe 700 can be an aluminum pipe, which can reduce the weight of the busbar pipe 700, and thus reduce the weight of the heat exchange device. The outer diameter of the busbar pipe 700 is 20 mm, and the wall thickness is 1 - 1.5 mm.

[0129] Considering that the area with the largest pressure loss in the heat exchange device is located in the flow channel with the largest flow rate, that is, the pressure drop in the confluence flow channel 300 is the largest; therefore, this embodiment can freely set the diameter of the confluence pipe 700 through the design of the external confluence pipe 700. For example, the diameter of the confluence pipe 700 can be increased, thereby reducing the pressure drop of the confluence pipe 700 as much as possible, thereby improving the heat exchange efficiency of the heat exchange device.

[0130] In this embodiment, the location of the confluence pipe 700 can cooperate with the side beam or longitudinal beam of the support, and the side beam or longitudinal beam of the support is closely fitted with the temperature homogenizing plate 130, so it is necessary to set a relief area on the side beam or longitudinal beam to accommodate the confluence pipe 700. The depth of the relief area is at least greater than or equal to the diameter of the confluence pipe 700, and the width of the relief area is greater than or equal to the diameter of the confluence pipe 700, so that there is a gap between the inner wall of the relief area and the outer wall of the confluence pipe 700.

[0131] In this embodiment, the bridging structure 400 includes a bridging tube; the heat exchange device includes a temperature averaging plate 130 and a flow channel plate 140 , and the heat exchange flow channel 100 is disposed between the temperature averaging plate 130 and the flow channel plate 140 .

[0132] The confluence pipe 700 is provided with a first connecting hole (not shown in the figure), the temperature plate 130 is provided with a second connecting hole (not shown in the figure) corresponding to the first connecting hole, and both ends of the bridge pipe are respectively connected with the first connecting hole and the second connecting hole to realize the connection between the confluence channel 300 and the heat exchange channel 100. In this embodiment, the bridging structure 400 is a bridge pipe, and the length or diameter of the bridge pipe can be freely set to facilitate the assembly of the heat exchange device.

[0133] Please refer to the attached Figure 8 To Attachment Figure 11 The confluence pipe 700 includes a first confluence pipe 710 and a second confluence pipe 720 . The first confluence pipe 710 is connected to the first heat exchange channel 110 through a bridge pipe, and the second confluence pipe 720 is connected to the second heat exchange channel 120 through a bridge pipe.

[0134] The first confluence pipe 710 includes a first sub-confluence pipe 711 and a second sub-confluence pipe 712 . The first sub-confluence pipe 711 and the second sub-confluence pipe 712 are located on both sides of the first heat exchange channel 110 in the second direction and are arranged in different layers from the first heat exchange channel 110 .

[0135] The second confluence pipeline 720 includes a third sub-confluence pipeline 721 and a fourth sub-confluence pipeline 722. In the direction perpendicular to the plane where the heat exchange flow channel 100 is located, the third sub-confluence pipeline 721 and the fourth sub-confluence pipeline 722 are respectively located on both sides of the second heat exchange flow channel 120. Among them, the second confluence pipeline 720 is also located in the middle of the second heat exchange flow channel 120 in the first direction.

[0136] With such an arrangement, it is convenient for the layout of the first confluence pipeline 710 and the second confluence pipeline 720, and the structural compactness of the heat exchange device is improved.

[0137] Please continue to refer to the appendix Figure 1 In the heat exchange device provided by the embodiment of the present application, at least two heat exchange flow channels 100 form a heat exchange flow channel group 800; the number of heat exchange flow channel groups 800 is multiple, and the multiple heat exchange flow channel groups 800 are arranged at intervals in the first direction; each heat exchange flow channel group 800 corresponds to a battery 200.

[0138] In each heat exchange flow channel group 800, the spaced confluence flow channels 300 and the heat exchange flow channels 100 are all connected through the bridging structure 400. With such an arrangement, the heat exchange capacity of the heat exchange device can be improved.

[0139] Among them, the heat exchange flow channel group 800 includes two first heat exchange flow channels 110 and a second heat exchange flow channel 120 located between the two first heat exchange flow channels 110. The two first heat exchange flow channels 110 are connected, and the first heat exchange flow channel 110 and the second heat exchange flow channel 120 are independent of each other.

[0140] The confluence flow channel 300 includes a first confluence flow channel 310 and a second confluence flow channel 320. The first heat exchange flow channel 110 is connected to the first confluence flow channel 310 through the bridging structure 400, and / or the second heat exchange flow channel 120 is connected to the second confluence flow channel 320 through the bridging structure 400. So as to adjust the flow rates of the first heat exchange flow channel 110 and the second heat exchange flow channel 120 targeted according to the heat generation conditions of each area of the battery 200, and further improve the temperature balance of the battery 200.

[0141] Please refer to the appendix Figure 12 The embodiment of the present application also provides a battery pack, which includes a battery 900 and the heat exchange device described in any of the above embodiments. The heat exchange device exchanges heat with the battery 900 to heat the battery 900.

[0142] In view of the fact that in this embodiment, the battery pack includes the heat exchange device described in any of the above embodiments, it has the structure and beneficial effects of the heat exchange device, and this embodiment will not be elaborated here.

[0143] In this embodiment, the battery 900 includes at least two heating regions with different heat generation amounts. At least two heat exchange channels 100 are arranged in one-to-one correspondence with the at least two heating regions, and each heat exchange channel 100 is respectively used for heat exchange with the corresponding heating region. That is to say, the first heating region 910 corresponds to the first heat exchange channel 110, so that the first heat exchange channel 110 can exchange heat with the first heating region 910; the second heating region 920 corresponds to the second heat exchange channel 120, so that the second heat exchange channel 120 can exchange heat with the second heating region 920. With such an arrangement, the parameters of the corresponding heat exchange channels 100 can be independently adjusted according to the heat generation amounts of different heating regions, and resource waste can be avoided, reducing the cost of the heat exchange device.

[0144] In a possible implementation manner, please refer to the attached Figure 13 and the attached Figure 14 , along the first direction, the battery 900 includes a first heating region 910 and a second heating region 920. The first heating region 910 is located on both sides of the second heating region 920, that is, the two second heating regions 920 are respectively located on one side of the first heating region 910; the heat generation amount of the first heating region 910 is greater than that of the second heating region 920.

[0145] It should be noted that in this embodiment, the first heating region 910 can be the region opposite to the pole column of the battery 900, and the heat generation amount in this region is relatively large, usually located at both ends of the battery 900 in the first direction; the second heating region 920 can be the other regions of the battery 900 except the region opposite to the pole column, and the heat generation amount in this region is relatively small, usually the middle region of the battery 900.

[0146] The at least two heat exchange channels 100 include the second heat exchange channel 120 and the first heat exchange channels 110 respectively located on both sides of the second heat exchange channel 120. In this embodiment, the first heat exchange channel 110 exchanges heat with the first heating region 910, and the second heat exchange channel 120 exchanges heat with the second heating region 920, so as to utilize the independent control of the first heat exchange channel 110 and the second heat exchange channel 120, adopt different flow rate strategies, adjust the cooling amount distribution of each heating region, so that different heat exchange channels 100 have different heat exchange capabilities, and further reduce the temperature difference between the first heating region 910 and the second heating region 920, thereby reducing the temperature difference of the battery pack.

[0147] In addition, the confluence channel 300 includes a first confluence channel 310 and a second confluence channel 320. The first heat exchange channel 110 is communicated with the first confluence channel 310 through a bridging structure 400, and / or the second heat exchange channel 120 is communicated with the second confluence channel 320 through a bridging structure 400.

[0148] In this embodiment, the battery pack further includes a support member, and the support member includes a plurality of accommodating cavities, and each accommodating cavity is used for accommodating a battery 900. Please refer to the attachedFigure 12 and the attached Figure 13 , there can be eight accommodating cavities, and two accommodating cavities are arranged in two rows and four columns. A beam structure is provided between any two adjacent accommodating cavities. Please refer to the attached Figure 12 , the number of accommodating cavities can be four, and the four accommodating cavities are arranged in sequence along the first direction.

[0149] In a possible implementation, there are multiple batteries 900, and the multiple batteries 900 are arranged at intervals along the first direction. Each battery 900 exchanges heat with the corresponding heat exchange channel group. In this way, each battery 900 dissipates heat through the corresponding heat exchange channel group, ensuring that heat can be quickly taken away, avoiding overheating of the battery, and improving the overall performance and lifespan of the battery pack.

[0150] The embodiment of the present application further provides an electrical device, including an electrical device and the battery pack described in any of the above embodiments. The battery pack is electrically connected to the electrical device and is used to provide electrical energy for the electrical device.

[0151] The electrical device in the embodiment of the present application can be a vehicle. For example: the vehicle can be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. Correspondingly, the electrical device can be a driving mechanism of the vehicle or a control system of the vehicle.

[0152] In addition, the electrical device can also be other energy storage devices, such as mobile phones, portable devices, laptop computers, electric toys, electric tools, ships and spacecrafts, etc. Among them, the spacecraft can include airplanes, rockets, space shuttles or spaceships.

[0153] In view of the fact that the electrical device in this embodiment includes the battery pack described in any of the above embodiments, therefore, the electrical device includes the battery pack structure and beneficial effects, and this embodiment will not be elaborated here anymore.

[0154] In this specification, the embodiments or implementation manners are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts among the embodiments can be referred to each other.

[0155] It should be noted that phrases such as "an embodiment", "the embodiment", "exemplary embodiment", "some embodiments", etc. mentioned in the specification indicate that the described embodiment may include specific features, structures or characteristics, but not necessarily every embodiment includes such specific features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when combining an embodiment to describe a specific feature, structure or characteristic, it is within the knowledge scope of those skilled in the art to implement such a feature, structure or characteristic in combination with other embodiments, whether explicitly or implicitly described.

[0156] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A heat exchange device, characterized in that, Comprising: At least two heat exchange channels (100), and at least two of the heat exchange channels (100) are opposed to each other; A confluence channel (300), and the confluence channel (300) and at least one of the heat exchange channels (100) are arranged at intervals; A bridging structure (400) that connects the confluence channel (300) and the heat exchange channel (100) arranged at intervals.

2. The heat exchange device according to claim 1, wherein, At least two of the heat exchange channels (100) are arranged on the same layer.

3. The heat exchange device according to claim 1, wherein The confluence channel (300) is arranged on the same layer as the heat exchange channel (100); The confluence channel (300) includes a first confluence channel (310) and a second confluence channel (320), and the second confluence channel (320) is located between the heat exchange channel (100) and the first confluence channel (310); Some of the at least two heat exchange channels (100) are connected to the first confluence channel (310) through the bridging structure (400); The remaining heat exchange channels (100) among the at least two heat exchange channels (100) are connected to the second confluence channel (320).

4. The heat exchange device according to any one of claims 1 to 3, characterized in that, The heat exchange device further includes a heat spreader (130) and a flow channel plate (140), and the heat spreader (130) and the flow channel plate (140) are arranged in a stacked manner; The confluence channel (300) and the heat exchange channel (100) are both arranged between the flow channel plate (140) and the heat spreader (130).

5. The heat exchange device according to claim 4, characterized in that, The heat exchange device further includes an auxiliary plate (150), and the auxiliary plate (150) is stacked on a side of the heat spreader (130) facing away from the flow channel plate (140) and forms the bridging structure (400) with the heat spreader (130); wherein, the bridging structure (400) is a bridging flow channel; A communication hole (131) is provided on the heat spreader (130); The first confluence channel (310) is connected to the heat exchange channel (100) through the bridging flow channel and the communication hole (131).

6. The heat exchange device according to claim 1, characterized in that, The confluence channel (300) includes a first confluence channel (310) and a second confluence channel (320), and the first confluence channel (310) and the second confluence channel (320) are arranged on different layers; The first confluence channel (310) and the heat exchange channel (100) are arranged on different layers, and the second confluence channel (320) and the heat exchange channel (100) are arranged on the same layer; At least one of the first confluence channel (310) and the second confluence channel (320) is connected through the bridging structure (400).

7. The heat exchange device according to claim 6, characterized in that, The orthographic projection of the first confluence channel (310) on the plane where the second confluence channel (320) is located at least covers a part of the second confluence channel (320).

8. The heat exchange device according to claim 6, wherein The heat exchange device includes a heat spreader (130) and a flow channel plate (140), and the heat spreader (130) and the flow channel plate (140) are arranged in a stacked manner; The second confluence channel (320) and the heat exchange channel (100) are both arranged between the flow channel plate (140) and the heat spreader (130).

9. The heat exchange device according to claim 8, characterized in that The heat exchange device further comprises an auxiliary plate (150), the auxiliary plate (150) being stacked on a side of the temperature averaging plate (130) away from the flow channel plate (140), and forming the first converging flow channel (310) and a bridging structure (400) together with the temperature averaging plate (130), wherein the bridging structure (400) is a bridging flow channel, and the bridging flow channel and the first converging flow channel are interconnected; The temperature equalizing plate (130) is provided with a communicating hole (131); The first converging flow channel (310) is connected to the heat exchange flow channel (100) through the bridging flow channel and the connecting hole (131).

10. The heat exchange device according to claim 1, wherein, The converging flow channel (300) and the heat exchange flow channel (100) are arranged in different layers.

11. The heat exchange device according to claim 10, wherein, The orthographic projection of the converging flow channel (300) on the surface where the heat exchange flow channel (100) is located partially overlaps with the heat exchange flow channel (100), and both the converging flow channel (300) and the heat exchange flow channel (100) have a projection overlap area; The bridging structure (400) connects the converging flow channel (300) and the projected overlapping area of the heat exchange flow channel (100).

12. The heat exchange device according to claim 11, wherein The heat exchange device comprises a converging pipe (700), the inner cavity of the converging pipe (700) constituting the converging flow channel; The confluence pipe (700) is connected to the heat exchange channel (100) via the bridging structure (400).

13. The heat exchange device according to claim 12, characterized in that, The bridging structure (400) comprises a bridging tube; the heat exchange device comprises a temperature averaging plate (130) and a flow channel plate (140); the heat exchange flow channel (100) is arranged between the temperature averaging plate (130) and the flow channel plate (140); The confluence pipe (700) is provided with a first communicating hole, the temperature equalizing plate (130) is provided with a second communicating hole corresponding to the first communicating hole, and both ends of the bridging pipe are respectively connected to the first communicating hole and the second communicating hole.

14. The heat exchange device according to claim 13, characterized in that, The confluence pipe (700) comprises a first confluence pipe (710) and a second confluence pipe (720), and the heat exchange flow channel (100) comprises a first heat exchange flow channel (110) and a second heat exchange flow channel (120); The first confluence pipe (710) is in communication with the first heat exchange channel (110) via the bridge pipe, and the second confluence pipe (720) is in communication with the second heat exchange channel (120) via the bridge pipe.

15. The heat exchange device according to any one of claims 1-3, characterized in that, At least two of the heat exchange channels (100) constitute a heat exchange channel group (800); There are a plurality of heat exchange channel groups (800), and the plurality of heat exchange channel groups (800) are arranged at intervals along the first direction; In each of the heat exchange flow channel groups (800), the converging flow channels (300) and the heat exchange flow channels (100) that are arranged at intervals are both connected via the bridging structure (400).

16. The heat exchange device according to claim 15, characterized in that, The heat exchange channel group (800) comprises two first heat exchange channels (110) and a second heat exchange channel (120) located between the two first heat exchange channels (110), the two first heat exchange channels (110) are connected, and the first heat exchange channel (110) and the second heat exchange channel (120) are independent of each other; The converging flow channel (300) includes a first converging flow channel (310) and a second converging flow channel (320). The first heat exchange flow channel (110) is communicated with the first converging flow channel (310) through the bridging structure (400), and / or the second heat exchange flow channel (120) is communicated with the second converging flow channel (320) through the bridging structure (400).

17. A battery pack, characterized in that, Comprising a battery (900) and a heat exchange device according to any one of claims 1-16; The heat exchange device exchanges heat with the battery (900).

18. The battery pack according to claim 17, characterized in that, The battery has at least two heat generating regions with different heat generation amounts; At least two of the heat exchange flow channels (100) are arranged in one-to-one correspondence with the at least two heat generating regions, and each of the heat exchange flow channels (100) is respectively used for exchanging heat with the corresponding heat generating region.

19. The battery pack according to claim 18, wherein, The at least two heat generating regions include a second heat generating region (920) and first heat generating regions (910) respectively located on both sides of the second heat generating region (920), and the heat generation amount of the first heat generating region (910) is greater than that of the second heat generating region (920); The at least two heat exchange flow channels (100) include a second heat exchange flow channel (120) and first heat exchange flow channels (110) respectively located on both sides of the second heat exchange flow channel (120); The first heat exchange flow channel (110) exchanges heat with the first heat generating region (910), and the second heat exchange flow channel (120) exchanges heat with the second heat generating region (920).

20. The battery pack according to claim 18 or 19, characterized in that, There are a plurality of the batteries (900), and the plurality of batteries (900) are arranged at intervals along the first direction; Each of the batteries (900) exchanges heat with the corresponding heat exchange flow channel group.

21. An electrical device, characterized in that, Comprising an electrical device and a battery pack according to any one of claims 17-20, the battery pack is electrically connected to the electrical device and is used to provide electrical energy for the electrical device.

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